Subversion-Projekte lars-tiefland.ci

<?php

/**

 * CodeIgniter

 *

 * An open source application development framework for PHP

 *

 * This content is released under the MIT License (MIT)

 *

 * Copyright (c) 2014 - 2019, British Columbia Institute of Technology

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 *

 * @package	CodeIgniter

 * @author	EllisLab Dev Team

 * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)

 * @copyright	Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)

 * @license	https://opensource.org/licenses/MIT	MIT License

 * @link	https://codeigniter.com

 * @since	Version 1.0.0

 * @filesource

 */

defined('BASEPATH') OR exit('No direct script access allowed');

/**

 * CodeIgniter URL Helpers

 *

 * @package		CodeIgniter

 * @subpackage	Helpers

 * @category	Helpers

 * @author		EllisLab Dev Team

 * @link		https://codeigniter.com/user_guide/helpers/url_helper.html

 */

// ------------------------------------------------------------------------

if ( ! function_exists('site_url'))

{

	/**

	 * Site URL

	 *

	 * Create a local URL based on your basepath. Segments can be passed via the

	 * first parameter either as a string or an array.

	 *

	 * @param	string	$uri

	 * @param	string	$protocol

	 * @return	string

	 */

	function site_url($uri = '', $protocol = NULL)

	{

		return get_instance()->config->site_url($uri, $protocol);

	}

}

// ------------------------------------------------------------------------

if ( ! function_exists('base_url'))

{

	/**

	 * Base URL

	 *

	 * Create a local URL based on your basepath.

	 * Segments can be passed in as a string or an array, same as site_url

	 * or a URL to a file can be passed in, e.g. to an image file.

	 *

	 * @param	string	$uri

	 * @param	string	$protocol

	 * @return	string

	 */

	function base_url($uri = '', $protocol = NULL)

	{

		return get_instance()->config->base_url($uri, $protocol);

	}

}

// ------------------------------------------------------------------------

if ( ! function_exists('current_url'))

{

	/**

	 * Current URL

	 *

	 * Returns the full URL (including segments) of the page where this

	 * function is placed

	 *

	 * @return	string

	 */

	function current_url()

	{

		$CI =& get_instance();

		return $CI->config->site_url($CI->uri->uri_string());

	}

}

// ------------------------------------------------------------------------

if ( ! function_exists('uri_string'))

{

	/**

	 * URL String

	 *

	 * Returns the URI segments.

	 *

	 * @return	string

	 */

	function uri_string()

	{

		return get_instance()->uri->uri_string();

	}

}

// ------------------------------------------------------------------------

if ( ! function_exists('index_page'))

{

	/**

	 * Index page

	 *

	 * Returns the "index_page" from your config file

	 *

	 * @return	string

	 */

	function index_page()

	{

		return get_instance()->config->item('index_page');

	}

}

// ------------------------------------------------------------------------

if ( ! function_exists('anchor'))

{

	/**

	 * Anchor Link

	 *

	 * Creates an anchor based on the local URL.

	 *

	 * @param	string	the URL

	 * @param	string	the link title

	 * @param	mixed	any attributes

	 * @return	string

	 */

	function anchor($uri = '', $title = '', $attributes = '')

	{

		$title = (string) $title;

		$site_url = is_array($uri)

			? site_url($uri)

			: (preg_match('#^(\w+:)?//#i', $uri) ? $uri : site_url($uri));

		if ($title === '')

		{

			$title = $site_url;

		}

		if ($attributes !== '')

		{

			$attributes = _stringify_attributes($attributes);

		}

		return '<a href="'.$site_url.'"'.$attributes.'>'.$title.'</a>';

	}

}

// ------------------------------------------------------------------------

if ( ! function_exists('anchor_popup'))

{

	/**

	 * Anchor Link - Pop-up version

	 *

	 * Creates an anchor based on the local URL. The link

	 * opens a new window based on the attributes specified.

	 *

	 * @param	string	the URL

	 * @param	string	the link title

	 * @param	mixed	any attributes

	 * @return	string

	 */

	function anchor_popup($uri = '', $title = '', $attributes = FALSE)

	{

		$title = (string) $title;

		$site_url = preg_match('#^(\w+:)?//#i', $uri) ? $uri : site_url($uri);

		if ($title === '')

		{

			$title = $site_url;

		}

		if ($attributes === FALSE)

		{

			return '<a href="'.$site_url.'" onclick="window.open(\''.$site_url."', '_blank'); return false;\">".$title.'</a>';

		}

		if ( ! is_array($attributes))

		{

			$attributes = array($attributes);

			// Ref: http://www.w3schools.com/jsref/met_win_open.asp

			$window_name = '_blank';

		}

		elseif ( ! empty($attributes['window_name']))

		{

			$window_name = $attributes['window_name'];

			unset($attributes['window_name']);

		}

		else

		{

			$window_name = '_blank';

		}

		foreach (array('width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'menubar' => 'no', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0') as $key => $val)

		{

			$atts[$key] = isset($attributes[$key]) ? $attributes[$key] : $val;

			unset($attributes[$key]);

		}

		$attributes = _stringify_attributes($attributes);

		return '<a href="'.$site_url

			.'" onclick="window.open(\''.$site_url."', '".$window_name."', '"._stringify_attributes($atts, TRUE)."'); return false;\""

			.$attributes.'>'.$title.'</a>';

	}

}

// ------------------------------------------------------------------------

if ( ! function_exists('mailto'))

{

	/**

	 * Mailto Link

	 *

	 * @param	string	the email address

	 * @param	string	the link title

	 * @param	mixed	any attributes

	 * @return	string

	 */

	function mailto($email, $title = '', $attributes = '')

	{

		$title = (string) $title;

		if ($title === '')

		{

			$title = $email;

		}

		return '<a href="mailto:'.$email.'"'._stringify_attributes($attributes).'>'.$title.'</a>';

	}

}

// ------------------------------------------------------------------------

if ( ! function_exists('safe_mailto'))

{

	/**

	 * Encoded Mailto Link

	 *

	 * Create a spam-protected mailto link written in Javascript

	 *

	 * @param	string	the email address

	 * @param	string	the link title

	 * @param	mixed	any attributes

	 * @return	string

	 */

	function safe_mailto($email, $title = '', $attributes = '')

	{

		$title = (string) $title;

		if ($title === '')

		{

			$title = $email;

		}

		$x = str_split('<a href="mailto:', 1);

		for ($i = 0, $l = strlen($email); $i < $l; $i++)

		{

			$x[] = '|'.ord($email[$i]);

		}

		$x[] = '"';

		if ($attributes !== '')

		{

			if (is_array($attributes))

			{

				foreach ($attributes as $key => $val)

				{

					$x[] = ' '.$key.'="';

					for ($i = 0, $l = strlen($val); $i < $l; $i++)

					{

						$x[] = '|'.ord($val[$i]);

					}

					$x[] = '"';

				}

			}

			else

			{

				for ($i = 0, $l = strlen($attributes); $i < $l; $i++)

				{

					$x[] = $attributes[$i];

				}

			}

		}

		$x[] = '>';

		$temp = array();

		for ($i = 0, $l = strlen($title); $i < $l; $i++)

		{

			$ordinal = ord($title[$i]);

			if ($ordinal < 128)

			{

				$x[] = '|'.$ordinal;

			}

			else

			{

				if (count($temp) === 0)

				{

					$count = ($ordinal < 224) ? 2 : 3;

				}

				$temp[] = $ordinal;

				if (count($temp) === $count)

				{

					$number = ($count === 3)

							? (($temp[0] % 16) * 4096) + (($temp[1] % 64) * 64) + ($temp[2] % 64)

							: (($temp[0] % 32) * 64) + ($temp[1] % 64);

					$x[] = '|'.$number;

					$count = 1;

					$temp = array();

				}

			}

		}

		$x[] = '<'; $x[] = '/'; $x[] = 'a'; $x[] = '>';

		$x = array_reverse($x);

		$output = "<script type=\"text/javascript\">\n"

			."\t//<![CDATA[\n"

			."\tvar l=new Array();\n";

		for ($i = 0, $c = count($x); $i < $c; $i++)

		{

			$output .= "\tl[".$i."] = '".$x[$i]."';\n";

		}

		$output .= "\n\tfor (var i = l.length-1; i >= 0; i=i-1) {\n"

			."\t\tif (l[i].substring(0, 1) === '|') document.write(\"&#\"+unescape(l[i].substring(1))+\";\");\n"

			."\t\telse document.write(unescape(l[i]));\n"

			."\t}\n"

			."\t//]]>\n"

			.'</script>';

		return $output;

	}

}

// ------------------------------------------------------------------------

if ( ! function_exists('auto_link'))

{

	/**

	 * Auto-linker

	 *

	 * Automatically links URL and Email addresses.

	 * Note: There's a bit of extra code here to deal with

	 * URLs or emails that end in a period. We'll strip these

	 * off and add them after the link.

	 *

	 * @param	string	the string

	 * @param	string	the type: email, url, or both

	 * @param	bool	whether to create pop-up links

	 * @return	string

	 */

	function auto_link($str, $type = 'both', $popup = FALSE)

	{

		// Find and replace any URLs.

		if ($type !== 'email' && preg_match_all('#(\w*://|www\.)[a-z0-9]+(-+[a-z0-9]+)*(\.[a-z0-9]+(-+[a-z0-9]+)*)+(/([^\s()<>;]+\w)?/?)?#i', $str, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER))

		{

			// Set our target HTML if using popup links.

			$target = ($popup) ? ' target="_blank" rel="noopener"' : '';

			// We process the links in reverse order (last -> first) so that

			// the returned string offsets from preg_match_all() are not

			// moved as we add more HTML.

			foreach (array_reverse($matches) as $match)

			{

				// $match[0] is the matched string/link

				// $match[1] is either a protocol prefix or 'www.'

				//

				// With PREG_OFFSET_CAPTURE, both of the above is an array,

				// where the actual value is held in [0] and its offset at the [1] index.

				$a = '<a href="'.(strpos($match[1][0], '/') ? '' : 'http://').$match[0][0].'"'.$target.'>'.$match[0][0].'</a>';

				$str = substr_replace($str, $a, $match[0][1], strlen($match[0][0]));

			}

		}

		// Find and replace any emails.

		if ($type !== 'url' && preg_match_all('#([\w\.\-\+]+@[a-z0-9\-]+\.[a-z0-9\-\.]+[^[:punct:]\s])#i', $str, $matches, PREG_OFFSET_CAPTURE))

		{

			foreach (array_reverse($matches[0]) as $match)

			{

				if (filter_var($match[0], FILTER_VALIDATE_EMAIL) !== FALSE)

				{

					$str = substr_replace($str, safe_mailto($match[0]), $match[1], strlen($match[0]));

				}

			}

		}

		return $str;

	}

}

// ------------------------------------------------------------------------

if ( ! function_exists('prep_url'))

{

	/**

	 * Prep URL

	 *

	 * Simply adds the http:// part if no scheme is included

	 *

	 * @param	string	the URL

	 * @return	string

	 */

	function prep_url($str = '')

	{

		if ($str === 'http://' OR $str === '')

		{

			return '';

		}

		$url = parse_url($str);

		if ( ! $url OR ! isset($url['scheme']))

		{

			return 'http://'.$str;

		}

		return $str;

	}

}

// ------------------------------------------------------------------------

if ( ! function_exists('url_title'))

{

	/**

	 * Create URL Title

	 *

	 * Takes a "title" string as input and creates a

	 * human-friendly URL string with a "separator" string

	 * as the word separator.

	 *

	 * @todo	Remove old 'dash' and 'underscore' usage in 3.1+.

	 * @param	string	$str		Input string

	 * @param	string	$separator	Word separator

	 *			(usually '-' or '_')

	 * @param	bool	$lowercase	Whether to transform the output string to lowercase

	 * @return	string

	 */

	function url_title($str, $separator = '-', $lowercase = FALSE)

	{

		if ($separator === 'dash')

		{

			$separator = '-';

		}

		elseif ($separator === 'underscore')

		{

			$separator = '_';

		}

		$q_separator = preg_quote($separator, '#');

		$trans = array(

			'&.+?;'			=> '',

			'[^\w\d _-]'		=> '',

			'\s+'			=> $separator,

			'('.$q_separator.')+'	=> $separator

		);

		$str = strip_tags($str);

		foreach ($trans as $key => $val)

		{

			$str = preg_replace('#'.$key.'#i'.(UTF8_ENABLED ? 'u' : ''), $val, $str);

		}

		if ($lowercase === TRUE)

		{

			$str = strtolower($str);

		}

		return trim(trim($str, $separator));

	}

}

// ------------------------------------------------------------------------

if ( ! function_exists('redirect'))

{

	/**

	 * Header Redirect

	 *

	 * Header redirect in two flavors

	 * For very fine grained control over headers, you could use the Output

	 * Library's set_header() function.

	 *

	 * @param	string	$uri	URL

	 * @param	string	$method	Redirect method

	 *			'auto', 'location' or 'refresh'

	 * @param	int	$code	HTTP Response status code

	 * @return	void

	 */

	function redirect($uri = '', $method = 'auto', $code = NULL)

	{

		if ( ! preg_match('#^(\w+:)?//#i', $uri))

		{

			$uri = site_url($uri);

		}

		// IIS environment likely? Use 'refresh' for better compatibility

		if ($method === 'auto' && isset($_SERVER['SERVER_SOFTWARE']) && strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS') !== FALSE)

		{

			$method = 'refresh';

		}

		elseif ($method !== 'refresh' && (empty($code) OR ! is_numeric($code)))

		{

			if (isset($_SERVER['SERVER_PROTOCOL'], $_SERVER['REQUEST_METHOD']) && $_SERVER['SERVER_PROTOCOL'] === 'HTTP/1.1')

			{

				$code = ($_SERVER['REQUEST_METHOD'] !== 'GET')

					? 303	// reference: http://en.wikipedia.org/wiki/Post/Redirect/Get

					: 307;

			}

			else

			{

				$code = 302;

			}

		}

		switch ($method)

		{

			case 'refresh':

				header('Refresh:0;url='.$uri);

				break;

			default:

				header('Location: '.$uri, TRUE, $code);

				break;

		}

		exit;

	}

}